Living the dream

I WAS interested to read Dr Michael Mosley’s article on dreams (Mail).

Remember those colourful pictures you could see in 3D by focusing in a certain way? I could never do it but, determined not to be beaten, I experimented and found they worked for me if I moved my eyes rapidly up and down.

My theory is that the rapid eye movement in REM sleep is what makes our dreams appear to us in 3D, so we seem to inhabit them rather than merely watch them. JANET ENTWISTLE,

Chelmsford, Essex.